Development of masterbatch
    The average annual demand growth rate of masterbatch in other countries in Asia is about 7%-9%, but the average annual demand growth rate of masterbatch in China is about 20%. China is expected to become the fastest growing market for masterbatch demand, especially in color and adding masterbatch. China depends on imports. China has become the largest producer and consumer of the masterbatch market in Asia. At present, there are 400 masterbatch production enterprises in China, mainly distributed in Guangdong, Zhejiang, Jiangsu, Shandong, Beijing, Shanghai, Hunan, Hebei and Tianjin. They belong to various industrial systems, and the annual production capacity is there are more than 50 enterprises with more than 1,000 tons, all over the country. The total demand for masterbatch in the country is less than 120,000 t/a, and the production capacity is seriously over-supplied, resulting in the widespread shortage of domestic masterbatch industry under working and fierce market competition. Among these masterbatch manufacturers, there is not many that have superior quality, and SMEs and individual companies account for a large proportion. There is a serious excess of production capacity, except for the rapid growth of new production equipment and insufficient product orders. The important factor is that the domestic masterbatch products have a single structure and incomplete varieties. The general-purpose products account for a large proportion, while the high-concentration and super-high concentration, multifunctional masterbatch and fine fiber masterbatch account for a smaller proportion. In contrast, In countries with high levels of masterbatch technology, there are  full range of pigments, dispersants and other raw materials, and forming Serialized and specialized product structure. The foreign masterbatch market is mainly concentrated in Western Europe, North America and Japan. The companies producing masterbatches are mostly multinational companies or Fortune 500 companies, such as Hanna, PoIyone, BASF, Hoechst, Suiqu Ciba-Geigy, Giarant, etc. The annual output is over 1 million tons, of which Western Europe accounts for more than 50%, and Hanna's annual sales volume is 140,000 tons.
    Special application of titanium dioxide in masterbatch
    The development of color masterbatch is very fast, and the production process of masterbatch is simple, and the investment is small. At present, there are hundreds of masterbatch factories in China, the scale of production and technical level are uneven, and the small annual output is several tens of tons or tens of thousands tons, the competition for products is becoming increasingly fierce, the profits of production enterprises are declining, and the quality of most masterbatch products is low. According to incomplete statistics, the titanium dioxide used for masterbatch production is 20,000 to 30,000 tons per year. The rutile used is divided into high, medium and low grades. The high grade uses imported rutile, the medium grade uses domestic rutile, and the low grade uses domestic anatase. Due to fierce competition, there is an increasing trend in the use of anatase titanium dioxide masterbatches.
    There are several kinds of masterbatch production processes, such as: high-speed mixers to mix pigments, resins, dispersants, volume pigments, other additives, twin-screw extruder to extrude masterbatch. Masterbatch is used as industrial material, its performance is usually showed in the follow-up application products. Therefore, the performance of titanium dioxide in the color masterbatch is also mainly reflected in the application of the masterbatch. Mainly reflected in the following aspects:

1) The coloring ability of titanium: it determines the amount of titanium used for same color of the plastic products;

2) The whiteness of titanium: it determines the appearance of light (white) plastic products for the same titanium content;

3) Dispersibility of titanium dioxide: affecting the production cost of color masterbatch and the appearance and gloss of plastic products;

4) Processing properties of titanium dioxide: affecting the production cost of masterbatch.

    Masterbatch without standard paint pigment standard
    The pigment is the raw material of the masterbatch. The quality of the pigment directly affects the quality of the masterbatch, and the quality of the masterbatch directly affects the quality of the plastic product. In other words, the requirement of the masterbatch of the plastic product is the requirement of the masterbatch for the pigment. This includes safety, heat resistance stability, light resistance and weather resistance, acid and alkali resistance, migration resistance, chemical resistance, and the like. However, pigments for masterbatch have never formed a national standard, and it has been 30 years they followed the standard for pigments used in paints.